/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Joint/PBDJointContainerSolver.h
For RBAN, there is oneFPBDJointContainerSolverthat solves all joints in the simulation in the order that they occur in the container.
class FPBDJointContainerSolver : public [Chaos::FConstraintContainerSolver](API\Runtime\Chaos\Chaos\Evolution\FConstraintContainerSolver)